Perform an action on an article: star, unstar, save, unsave, mark_read, mark_unread, thumbs_up, thumbs_down
AI agents use crow_media_article_action to create or update resources in Crow — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Crow environment.
This tool modifies article metadata and user preference states (starred status, read status, ratings) but does not delete data, execute external code, or cause irreversible changes. All actions are reversible—unmarking, unstarring, and removing saves restore prior states. The blast radius is minimal: incorrect classification of an article as read or starred affects only that user's view and preferences.
From the tool's definition Tool description explicitly lists reversible actions: 'star, unstar, save, unsave, mark_read, mark_unread, thumbs_up, thumbs_down'. These are all state-modification operations that can be undone.
Documented attack patterns abuse exactly the kind of access crow_media_article_action gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Crow, and nothing reaches the server without passing your rules. This is the rule we recommend for crow_media_article_action:
{
"version": "1",
"default": "deny",
"tools": {
"crow_media_article_action": {
"limits": [
{
"counter": "crow_media_article_action_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}crow_media_article_action stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Perform an action on an article: star, unstar, save, unsave, mark_read, mark_unread, thumbs_up, thumbs_down. It is categorised as a Write tool in the Crow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Crow MCP server in PolicyLayer and add a rule for crow_media_article_action: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Crow. Nothing to install.
crow_media_article_action is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the crow_media_article_action rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for crow_media_article_action. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
crow_media_article_action is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Crow, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
576 Crow tools catalogued and risk-classified — across an index of 43,000+ MCP servers.